- "I'm prepared to give everything I've got to become Center Nova!"
- —Yuuko in Next Stage Episode 14.
|Japanese Name||君島光 （きみしま ひかる）|
|Romanized Name||Kimishima Hikari|
|English Name||Hikari Kimishima|
|Birthday||December 12th, 0029|
|Debut||Episode 1 - Uneraseable Dream|
|Japanese Voice||Akemi Kanda|
|English Voice||Tiffany Terrell|
Yuuko has short, brown-orange hair and a side ponytail with three braids going across. She has brownish-orange eyes and a heart shaped sparkle in her hair and eyes just like all members of AKB0048.
In the manga, she has medium length, wavy pink hair and blue eyes.
Yuuko has an energetic, outgoing, upbeat and mischevious personality. However, when it comes to being center nova, she's serious and determined. She always tries her best to receive the Center Position no matter what and always tries to cover up her anger and frustration.
Yuuko became a successor when she was at least 14 years old. Along with the rest of AKB0048, she holds a secret concert in an abandoned mine on Lancastar. DES tried to stop them, but was quickly defeated. During the performance of Shoujotachi Yo, she seemed to notice Nagisa, Orine, Yuka, and Chieri and waved to the girls. She also took an active role in combating the forces of DES, throwing bombs at them and attacking with spirit.
4 years later, Yuuko and the rest of AKB0048 appeared on a hologram card that Yuka had received, telling them how to auditions.
Later, her and the rest of AKB0048 came to the rescue of the auditioners when DES took over a ship in order to search and capture the auditioners. She managed to save Chieri from a fallen chandelier that had trapped her and lifted the it with ease just by singing the Heavy Rotation.
They managed to rescue the auditioners, defeat the DES and make an escape on their ship before they could be captured.
Yuuko appears in Episode 3 in the practice room alongside the other members of AKB0048.
In Episode 4, while members of the 77th Generation were looking at the pictures of the past Centers, Yuuko comes up behind them and declares that she will be next Center.
She comes up on Chieri and Nagisa in Episode 5, and when Nagisa says she expected to see Yuko involved in sports, Yuuko laughs and says she is into ordinary things, like puzzles and reading, and that photography is her hobby. She then shares photos she has taken of the other members, and shares her memories of Acchan, and a bit of info about the past girls who have held Center Position before running off to take some more photos.
In Episode 7, she trained Chieri as her stand-in. During the lunch break, it is shown that she likes green steak peppers made by Chef Papa. Hearing that, Chieri asks for extra pepper even though she doesn't like them because she wants to be more like Yuuko. She then follows Yuuko walking around the city. Yuuko then later goes to unknown place. Later on, her Mayuyu and Yukirin hear Takamina saying that Kanata should be a successor and that she'd tell Tsubasu-san. Yuuko hugs her and kisses her cheek, saying that she will join her, too. Yukirin and Mayuyu also join her. When they arrive at the holy grounds, they see the Kirara of Succession. Then, images of them and the original members that they have succeed appear. After the original Takamina appeared, instead of showing the current Takamina, Kanata appeared. Tsubasu appears to tell them that even though Takamina is the successor to the name of Takahashi Minami, Kanata's soul is the closest. All of them are shocked when they hear this. Yuuko got very angry from what Tsubasu said and yelled at her stating that no one could ever replace Takamina. Then all of them exit.
In the next episode, Yuuko is seen when Takamina wakes up from her long-sleep.
Season 2 - Next Stage
Yuuko takes a more prominant position in Season 2. Her desire to become Center Nova only grows with the announcement of the return of the position and the return of the General Elections. Early in the season she declares all members of AKB0048 (successors and understudies) to be her rivals and adds emphasis to Chieri and Nagisa. In the early results of the General Elections, she ranks 2nd, losing to Takamina. In conclusion to the General Elections, Yuuko ranks 1st and vows to become Center Nova and outshine Acchan the 13th.
After the elections, she begins to doubt herself because of the radiance produced by Nagisa and Chieri. When the rumor is revealed that someone will succeed Acchan, she begins to doubt herself. As a test to see who has a chance of becoming Center Nova and/or Acchan, she takes pictures of all of the members only to find nothing (meaning she could have no competition or that she is not meant to be Center Nova and as such can't detect other members who will take the rank).
On the attack on Akibastar, she became Center Nova, but is unable to control the power and energy of Center Nova and disappears to the other world, where Acchan and the others are.
In Episode 26, Niji no Ressha is performed, Yuuko admits to Acchan the 13th that becoming Center Nova was never her true goal, and that in reality, she just wanted to sing alongside her heroine, Atsuko Maeda. Acchan says that Atsuko Maeda has always been by her side. Later it is revealed that Nagisa is in fact Maeda Atsuko the 14th. She is then later overheard singing along to Kaze wa Fuiteiru, and appears through the Kirara drive-like gate and continues singing with the successors and understudies.
Yuko Oshima was born on October 17, 1988 in Tochigi Prefecture, Japan. She was a 2nd generation AKB48 member and belonged to Team K, but is still part of sub unit Not Yet. During the Tokyo Dome team reshuffle, she replaced Sayaka Akimoto as the captain of Team K. She was also one of the group's most popular members, known as the face of AKB48 together with fellow member Atsuko Maeda. She graduated in June, 2014. Before joining AKB48, she was a child actor, acting since she was 7 and belonged to the group Doll's Vox. She is known for her good relationship with Haruna Kojima and their relationship is called KojiYuu by fans.
- The name Hikari means "light" (光).
- Her alias name Yuko means "excellence, superiority, gentleness" (優) (yu) and "child" (子) (ko).
- Hikari's surname Kimishima means "lord, noble" (君) (kimi) and "island" (島) (shima).
- Her alias surname Oshima means "big, great" (大) (o) and "island" (島) (shima).
- There was a girl who was the 8th Yuuko Ooshima for at least 3 years before Hikari succeeded the name.
- The current Yuuko is the 9th person to hold this title.
- In Episode 16, it is revealed that Yuuko ranked 2nd in the early results of the General Elections.
- However, in Episode 17, at the General Elections with the final results, she ranked 1st with 1,326,745 points.
- Yuuko and Chieri Sono both have a similar fringe.
- Yuuko likes peppers.
- Since Yuuko is from the 72nd Generation, she became an understudy when she was 13 years old.
- In Episode 25, it is revealed that even though Yuuko met the conditions to initiate her as a Center Nova, but she never fully obtained Center Nova status because she did not disappear like one as concluded by Tsubasa and Mii-chan.
- Yuuko and Kojiharu are from the same generation, however, Yuuko became a successor first.
- AKB0048 Volume 1 Blu-Ray Booklet
- AKB0048 Episode 0 manga.